The Senate Judiciary Committee is investigating whether Lynch attempted to interfere with the FBI's investigation into Clinton's email server after it was reported that a Russian intelligence memo, considered dubious, alleged that Lynch communicated with Clinton staffer Amanda Renteria about the probe.

"Ms. Lynch does not know Ms. Renteria, did not discuss the Clinton email investigation with Ms. Renteria, and did not communicate to Ms. Renteria, either in words or in substance, that ‘she would not let the FBI investigation into Clinton go too far,'" Lynch's lawyer said in a letter to the Senate Judiciary Committee, according to Politico.

"Likewise, to the best of her knowledge and recollection, neither Ms. Lynch nor any representative of the Office of the Attorney General discussed the Clinton email investigation with Ms. Renteria, Representative [Debbie] Wasserman Schultz or her staff, or any DNC official," the letter continued.

The existence of the Russian intelligence memo, which was obtained by the FBI, was first reported by the New York Times in April.

But in May, the Washington Post reported on the details of the document, which referenced an email former Democratic National Committee Chairwoman Debbie Wasserman Schultz sent to Leonard Benardo of the Open Society Foundations.

According to the memo, the email indicated Lynch had assured Renteria that "she would not let the FBI investigation into Clinton go too far."

Leaders of the Senate Judiciary Committee sent Lynch, Renteria, and Benardo letters last month asking about the allegations made in the Russian memo.

Lynch's lawyer, Robert Raben said the former attorney general "intends to cooperate fully" with the Judiciary Committee's investigation.